As a writer, I attend book signings and other events. Sometimes I offer a giveaway item. Bookmarks and book business cards are common. But writers must get a little creative in order to stand out.
Many writers have raffles, giving away gift baskets, free books, or something different. When my hockey novel "Run to You" was published, I raffled off a 1993 Canadian silver dollar. This lovely coin was minted to commemorate the 100th anniversary of the Stanley Cup. The .925 silver coin features two hockey players and two looks at the Cup--as it was in 1893 and as it appeared in 1993. The Montreal Canadiens won the Cup that year--the last time a Canadian team won the Cup.
This was a beautiful and historical coin in itself, quite popular with hockey fans in Canada and the USA. The winner was happy with it too.